CN201611400U - Integrated multi-channel optical-to-electrical transducer - Google Patents
Integrated multi-channel optical-to-electrical transducer Download PDFInfo
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- CN201611400U CN201611400U CN2009202626279U CN200920262627U CN201611400U CN 201611400 U CN201611400 U CN 201611400U CN 2009202626279 U CN2009202626279 U CN 2009202626279U CN 200920262627 U CN200920262627 U CN 200920262627U CN 201611400 U CN201611400 U CN 201611400U
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- electric transducer
- light electric
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Abstract
The utility model provides an integrated multi-channel optical-to-electrical transducer, which comprises an optical input module and an optical receiving module, wherein the optical input module is provided with a plurality of parallel optical fibers, the optical receiving module is arranged just opposite to the optical input module, the optical receiving module is provided with a plurality of photoelectric elements which correspond to the optical fibers one by one, a plurality of image focal length prolonging apparatuses which correspond to the plurality of optical fibers one by one are arranged between the optical input module and the optical receiving module, and each image focal length prolonging apparatus is arranged between the optical fiber and the photoelectric element which correspond to each other. The integrated multi-channel optical-to-electrical transducer can lead the distance between the optical receiving module and the image focal length prolonging apparatuses to be longer, has low assembly technical requirement, and can effectively prevents from the phenomenon of interference.
Description
Technical field
The utility model relates to optical-fibre communications field, specifically, relates to a kind of integrated multichannel light electric transducer.
Background technology
In the modern Fiber Optical Communication System, need to use photoelectric commutator to convert electric signal to, thereby realize monitoring, maintenance and signal handled fiber optic network by the light signal of Optical Fiber Transmission.Existing photoelectric commutator mostly is the integrated photoelectric commutator of hyperchannel, it has multi-channel optical fibre, and is provided with a plurality of photovalves, can change the light signal of multi-channel optical fibre transmission simultaneously, with the installing space of minimizing photoelectric commutator, and reduce installation cost and maintenance cost.
Have a kind of multichannel light electric transducer now as shown in Figure 1, this multichannel light electric transducer has light load module 10, and it comprises the many optical fiber that are arranged in parallel 11, and light signal is from the end outgoing of optical fiber 11.Be provided with Optical Receivers 14 over against light load module 10, it has a substrate 15, and substrate 15 is provided with a plurality of photovalves 16, and each photovalve 16 is all corresponding with an optical fiber 11, so photovalve 16 also is arranged in parallel.
Be provided with lenticule module 20 between light load module 10 and Optical Receivers 14, lenticule module 20 has a plurality of micro lens 21, and each micro lens 21 is all corresponding with an optical fiber 11, and between the optical fiber 11 and photovalve 16 of correspondence.Micro lens 21 is the lens of column, and two ends are the first surface 22 and second curved surface 23 of evagination, and first surface 22 is located at the end near optical fiber 11, and second curved surface 23 is located at the end near photovalve 16.
Light signal is after the end outgoing of optical fiber 11, and the first surface 22 of process micro lens 21 enters micro lens 21, and focuses on the photovalve 16 from 23 outgoing of second curved surface, and photovalve 16 converts the light signal that receives to electric signal.
Because the spacing of adjacent fiber 11 is very little in the existing light load module 10, normally 0.25 millimeter, therefore the size of micro lens 21 is also very little, if light signal is coupled to the micro lens 21 after optical fiber 11 outgoing losslessly, the end face of optical fiber 11 needs very the first surface 22 near micro lens 21.In the same manner, if will make photovalve 16 receive the light signal of micro lens 21 outgoing losslessly, the distance between second curved surface of photovalve 16 and micro lens 21 also needs to be provided with very for a short time.
But, according to the structure and the encapsulation technology of present photoelectric commutator, photovalve 16 being installed to and the unusual difficulty in the very little position of micro lens 21 distance, the packaging technology of photoelectric commutator requires very high.
Therefore, existing another kind of multichannel light electric transducer uses a biconvex toroidal lens to substitute a plurality of micro lens, and its structural representation as shown in Figure 2.This kind multichannel light electric transducer also has the light load module of being made up of the many optical fiber that be arranged in parallel 11 10, and is provided with Optical Receivers 14, and Optical Receivers 14 is provided with a plurality of photovalves 16.
Between light load module 10 and Optical Receivers 14, be provided with a biconvex toroidal lens 25, its two ends have the first surface 26 and second curved surface 27 of evagination, wherein first surface 26 is near an end of optical fiber 11, and second curved surface 27 is located at the end near photovalve 16.
Light signal is after optical fiber 11 end outgoing, and the 25 back outgoing of process biconvex toroidal lens are to photovalve 16.Because the size of biconvex toroidal lens 25 is not subjected to the restriction of optical fiber 11 spacings in the light load module 10, therefore can use the biconvex toroidal lens 25 of picture side's focal length as any distance, the distance that light load module 10 biconvex toroidal lenss are 25 can be provided with longlyer, multichannel light electric transducer easy to assembly reduces assembly cost.
But, there is the aberration phenomenon mostly in existing biconvex toroidal lens 25, for the input optical signal from the optical axis center diverse location of biconvex toroidal lens 25, behind biconvex toroidal lens 25, focal position on the same plane vertical with optical axis, does not promptly produce so-called blooming effect.Far away more from optical axis center, defocus serious more.As shown in Figure 2, there is serious blooming effect in two light signals that receive from biconvex toroidal lens 25 optical axises photovalve 16 far away up and down.
And, because the highly integrated encapsulation of photovalve 16 of existing photoelectric commutator, adjacent two photovalve 16 spacings are very little, and photovalve 16 receives the light signal of adjacent light electric device 16 easily, promptly cause and crosstalk, cause photovalve 16 cisco unity malfunctions of being crosstalked usually.
Summary of the invention
Fundamental purpose of the present utility model provides the lower integrated multichannel light electric transducer of a kind of packaging technology requirement;
Another purpose of the present utility model provides a kind of integrated multichannel light electric transducer of effectively avoiding crosstalk phenomenon.
For realizing above-mentioned fundamental purpose, the integrated multichannel light electric transducer that the utility model provides comprises the light load module, it has the many optical fiber that be arranged in parallel, be provided with Optical Receivers over against the light load module, Optical Receivers has and a plurality of one to one photovalves of multifiber, wherein, be provided with between light load module and the Optical Receivers and the one to one a plurality of picture sides of multifiber focal length prolongation device, and each prolongs device between the optical fiber and photovalve of correspondence as square focal length.
Light signal enters corresponding picture side's focal length and prolongs device after the fiber end face outgoing, shines the photovalve from prolonging the device end face as square focal length again.Prolong device because picture side's focal length is set between optical fiber and the photovalve, after light signal prolongs the device outgoing from picture side's focal length, can prolong device place focusing far away from picture side's focal length, promptly it is longer as square focal length.Like this, photovalve can be installed in distance images side's focal length and prolong device place far away, also can receive the light signal of outgoing well.
By above scheme as seen, Optical Receivers does not need mounting distance picture side focal length to prolong the very short position of device, can reduce the packaging technology requirement of integrated multichannel light electric transducer so greatly, reduces the assembly cost of integrated multichannel light electric transducer yet.And light signal can focus on and be incident to the photovalve after prolonging the device outgoing as square focal length, can effectively avoid crosstalk phenomenon like this, improves the using character of integrated multichannel light electric transducer.
A preferred scheme is, is little GRIN Lens as square focal length prolongation device, and a plurality of little GRIN Lens be arranged in parallel, and form lenticule module, and the external diameter of little GRIN Lens is equal with corresponding optical fiber external diameter.
This shows,,, can change the distance between lenticule module and the photovalve, be convenient to the assembling of integrated multichannel light electric transducer keeping realizing specific picture side's focal length under the constant situation of object distance by changing the length of little GRIN Lens.
Description of drawings
Fig. 1 is the structural representation of existing multichannel light electric transducer;
Fig. 2 is the structural representation of existing another kind of multichannel light electric transducer;
Fig. 3 is the structural representation of the utility model first embodiment;
Fig. 4 is the cutaway view Amplified image of lenticule module among the utility model first embodiment;
Fig. 5 is the cutaway view Amplified image of lenticule module among the utility model second embodiment;
Fig. 6 is the structural representation of the utility model the 3rd embodiment;
Fig. 7 is the structural representation of the utility model the 4th embodiment;
Fig. 8 is the cuing open to put and look big figure of expanded core fiber among the utility model the 4th embodiment.
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
First embodiment:
Referring to Fig. 3, present embodiment has light load module 10, and it has the many optical fiber that be arranged in parallel 11, and light signal is from the end outgoing of optical fiber 11.Be provided with Optical Receivers 14 over against light load module 10, Optical Receivers 14 has a substrate 15, and substrate is provided with a plurality of photovalves 16, and each photovalve 16 is all corresponding with an optical fiber 11, is used to receive the light signal of corresponding optical fiber 11 outgoing.Because optical fiber 11 is arranged in parallel, thus photovalve 16 also correspondence be arranged in parallel.Preferably, photovalve 16 is a photodiode, and the optical axis of a plurality of photodiodes at grade.
A plurality of photovalves 16 of Optical Receivers 14 all are grown on the same substrate 15, and substrate 15 has a public electrode, and each photovalve 16 all also is provided with an independently electrode.Simultaneously, each photovalve 16 is receiving optical signals independently all, and independently light signal is handled.
Certainly, during practical application, each photovalve 16 also can be to have independently two electrodes, and one is anodal, and another is a negative pole, and this does not influence enforcement of the present utility model.
In the present embodiment, Optical Receivers 14 adopts level Hermetic Package, be that Optical Receivers 14 has a housing of being made by metal and glass plate, this housing adopts the level Hermetic Package technology, photovalve 16 is avoided in housing, to prevent that air outside from entering in the housing, avoid photovalve 16 that oxidation reaction takes place.An end wall of housing is provided with glass plate, and 16 of a plurality of photo elements are over against the glass plate setting, so that photovalve 16 receiving optical signals.
In the present embodiment, optical fiber 11 is conventional fiber, and its external diameter is 0.25 millimeter, and the spacing of adjacent two optical fiber 11 also is 0.25 millimeter, and the spacing of promptly adjacent two optical fiber 11 equates with the external diameter of optical fiber 11.Simultaneously, the spacing of Optical Receivers 14 adjacent two photovalves 16 equates with the spacing of adjacent two optical fiber 11.
Between light load module 10 and Optical Receivers 14, be provided with lenticule module 30, lenticule module 30 comprises that a plurality of conducts prolong little GRIN Lens 31 of device as square focal length, each little GRIN Lens 31 is all corresponding with an optical fiber 11, and each little GRIN Lens 31 is between corresponding optical fiber 11 and photovalve 16.
Simultaneously, in the present embodiment, the external diameter of each little GRIN Lens 31 equates with the external diameter of corresponding optical fiber 11.Preferably, the external diameter of each optical fiber 11 equates in the light load module 10, and therefore, the external diameter of each little GRIN Lens 31 also equates.
Little GRIN Lens 31 is a lens pillar, and its material by gradually changed refractive index is made, and light signal can be in local imaging and focusing far away after little GRIN Lens 31 outgoing, and promptly it is far away as square focal length.Like this, even there is bigger distance between photovalve 16 and little GRIN Lens 31 end faces, photovalve 16 is receiving optical signals well still, Optical Receivers 14 can be installed in the place far away apart from lenticule module 30, reduce the packaging technology requirement of multichannel light electric transducer, be convenient to the assembling of multichannel light electric transducer.
Referring to Fig. 4, lenticule module 30 has two glass plates 34,35 that be arranged in parallel, and a plurality of little GRIN Lens 31 are arranged between the glass plate 34,35 abreast, and the spacing of adjacent two little GRIN Lens 31 equates.
In the present embodiment, the external diameter of little GRIN Lens 31 is L1, and the spacing of adjacent two little GRIN Lens 31 is L2, and L1 equates with L2, is 0.25 millimeter.As seen, the spacing of the spacing of the external diameter of optical fiber 11, adjacent two optical fiber 11, the external diameter of little GRIN Lens 31 and adjacent two little GRIN Lens 31 all equates, is 0.25 millimeter.
Between two glass plates 34,35, be filled with bonding agent 36,, be used for glass plate 34,35 and little GRIN Lens 31 gummeds as epoxy glue.
Second embodiment:
Identical with first embodiment, present embodiment is provided with light load module, Optical Receivers and lenticule module, wherein the light load module has the many optical fiber that be arranged in parallel, Optical Receivers has a plurality of photovalves, lenticule module has a plurality of little GRIN Lens that be arranged in parallel, does not repeat them here.
Referring to Fig. 5, lenticule module 40 has glass cover-plate 41 and the glass film plates 42 that is parallel to each other, and offers many v-depressions 43 on the glass film plates 42, and v-depression 43 is arranged in parallel, and the spacing of adjacent two grooves 43 equates.Each little GRIN Lens 31 is located on the groove 43, and the external diameter of little GRIN Lens 31 equates with the spacing of adjacent two little GRIN Lens 31, is 0.25 millimeter.
Between glass cover-plate 41 and glass film plates 42, be filled with bonding agent 45, be used for glass cover-plate 41, glass film plates 42 and little GRIN Lens 31 gummeds.
This shows that by the v-depression on the glass film plates 42, little GRIN Lens 31 is parallel and arrange equally spacedly, is convenient to receive the light signal of multifiber outgoing, also helps the light signal outgoing to corresponding photovalve.
Because light signal through after little GRIN Lens 31, can focus in place far away and form mirror image, so Optical Receivers can be installed in the place far away apart from lenticule module, the assembling difficulty of reduction multichannel light electric transducer.And little GRIN Lens is corresponding one by one with photovalve, and light signal can effectively be avoided crosstalk phenomenon from energy outgoing after little GRIN Lens outgoing to corresponding photovalve.
The 3rd embodiment:
Referring to Fig. 6, present embodiment has light load module 10, and it has the many optical fiber that be arranged in parallel 11.Be provided with Optical Receivers 14 over against light load module 10, it has substrate 15, and substrate 15 is provided with and a plurality of one to one photovalves 16 of optical fiber 11.
Be provided with in the end of each optical fiber 11 as the optical fiber lens 50 that prolongs device as square focal length, optical fiber lens 50 is the end multimode optical fiber of welding in optical fiber 11 ends, and it is to the light signal focusing that is coupled, and can obtain enough picture side's focal lengths.
When making optical fiber lens, at first at the end of optical fiber 11 welding one end multimode optical fiber, and the length of control multimode optical fiber, mode by the heating of arc discharge or localized hyperthermia is processed into curved surface with the end face of multimode optical fiber then, and for example to be made into radius-of-curvature be 0.85 millimeter curved surface to the optical fiber lens end face.Like this, optical fiber lens 50 is promptly made and is finished, and the diameter of optical fiber lens 50 is greater than the external diameter of optical fiber 11 coverings.
When light signal is sent to optical fiber 11 terminal, enter in the optical fiber lens 50, and through optical fiber lens 50 back outgoing to photovalve 16.Because the end face of optical fiber lens 50 is a curved surface, and the diameter of optical fiber lens 50 is greater than the external diameter of optical fiber 11, therefore light signal can focus in place far away after optical fiber lens 50 outgoing, Optical Receivers 14 can be arranged on the place far away apart from optical fiber lens 50, is convenient to the assembling of integrated multichannel light electric transducer.
In addition, promptly very close to each other between optical fiber 11 and the optical fiber lens 50 because optical fiber lens 50 is welding ends at optical fiber 11, can also economize the assembly work of delustering between load module and the lenticule module, simplify the mounting process of integrated multichannel light electric transducer.
The 4th embodiment:
Referring to Fig. 7, present embodiment has light load module 10, and it has the many optical fiber that be arranged in parallel 11.Be provided with Optical Receivers 14 over against light load module 10, it has a plurality of and optical fiber 11 photovalve 16 one to one.
End at each optical fiber 11 forms expanded core fiber 60 (TEC) by local heat treatmet, and expanded core fiber 60 is that picture side's focal length of present embodiment prolongs device, and its structural drawing as shown in Figure 8.Front end 61 core diameters of expanded core fiber 60 equate with the core diameter of optical fiber 11, and the end of expanded core fiber distinguishes 62 for expanding bundle, and the core diameter that expands bundle district 62 increases gradually, and the end core diameter is much larger than the core diameter at front end 61 places.
Light signal enters expansion bundle district 62 back diversities much smaller than conventional fiber 11, promptly also can obtain less picture in place far away through the light signal behind the expansion bundle district 62, so Optical Receivers 14 can be arranged on apart from expanded core fiber 60 end faces place far away.In addition, can when being incident to photovalve 16, focus on, effectively avoid crosstalk phenomenon from the light signal of expanded core fiber 60 outgoing.
The foregoing description only is preferred four embodiments of the utility model, during practical application more change can also be arranged, and for example, among second embodiment, it is semicircle or square etc. that the groove of glass film plates is arranged to; Perhaps, use the sheet material instead of glass plate of other transparent materials, these cover plates do not influence facility of the present utility model.
It is emphasized that at last; the utility model is not limited to above-mentioned embodiment, also should be included in the protection domain of the utility model claim as the change of little GRIN Lens external diameter and adjacent two little GRIN Lens spacings, the small variations such as change of optical fiber lens diameter.
Claims (13)
1. integrated multichannel light electric transducer comprises
The light load module has the many optical fiber that be arranged in parallel;
Over against the Optical Receivers that described smooth load module is provided with, described Optical Receivers has and a plurality of one to one photovalves of described multifiber;
It is characterized in that:
Be provided with between described smooth load module and the described Optical Receivers and the one to one a plurality of picture sides of described multifiber focal length prolongs device, described each prolong device between the optical fiber and photovalve of correspondence as square focal length.
2. integrated multichannel light electric transducer according to claim 1 is characterized in that:
It is little GRIN Lens that described picture side focal length prolongs device, and described a plurality of little GRIN Lens be arranged in parallel, and forms lenticule module.
3. integrated multichannel light electric transducer according to claim 2 is characterized in that:
The external diameter of described little GRIN Lens equates with described corresponding optical fiber external diameter.
4. integrated multichannel light electric transducer according to claim 3 is characterized in that:
The spacing of described adjacent two little GRIN Lens equates with the spacing of described adjacent two optical fiber.
5. according to each described integrated multichannel light electric transducer of claim 2 to 4, it is characterized in that:
Described lenticule module also has two glass plates that be arranged in parallel, and described a plurality of little GRIN Lens are arranged between the described glass plate equally spacedly, is filled with bonding agent between described two glass plates.
6. according to each described integrated multichannel light electric transducer of claim 2 to 4, it is characterized in that:
Described lenticule module also has glass cover-plate and the glass film plates that be arranged in parallel, parallel and be provided with many grooves equally spacedly on the described glass film plates, each little GRIN Lens is arranged in the groove, is filled with bonding agent between described glass cover-plate and the glass film plates.
7. integrated multichannel light electric transducer according to claim 1 is characterized in that:
It is the optical fiber lens of welding at described optical fiber end that described picture side focal length prolongs device, and the end face of described optical fiber lens is a curved surface.
8. integrated multichannel light electric transducer according to claim 7 is characterized in that:
Described optical fiber lens is the multimode optical fiber through arc discharge or localized hyperthermia's heat treated.
9. integrated multichannel light electric transducer according to claim 1 is characterized in that:
Described picture side focal length prolongs the expanded core fiber of device for described optical fiber connector being carried out obtain after the local heat treatmet.
10. according to claim 1 to 4,7,9 each described integrated multichannel light electric transducers, it is characterized in that:
A plurality of photovalves of described Optical Receivers are grown on the same substrate, and described a plurality of photovalves have a public electrode, and each photovalve also has an independently electrode.
11. integrated multichannel light electric transducer according to claim 10 is characterized in that:
The spacing of adjacent two photovalves of described Optical Receivers equates with the spacing of adjacent two optical fiber of light load module.
12. integrated multichannel light electric transducer according to claim 10 is characterized in that:
Described Optical Receivers has airtightization encapsulating housing, and described a plurality of photovalves are enclosed in the described housing.
13. integrated multichannel light electric transducer according to claim 12 is characterized in that:
Described housing has glass plate, and described a plurality of photovalves are over against described glass plate setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202626279U CN201611400U (en) | 2009-11-06 | 2009-11-06 | Integrated multi-channel optical-to-electrical transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202626279U CN201611400U (en) | 2009-11-06 | 2009-11-06 | Integrated multi-channel optical-to-electrical transducer |
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| Publication Number | Publication Date |
|---|---|
| CN201611400U true CN201611400U (en) | 2010-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202626279U Expired - Lifetime CN201611400U (en) | 2009-11-06 | 2009-11-06 | Integrated multi-channel optical-to-electrical transducer |
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| Country | Link |
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| CN (1) | CN201611400U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI560481B (en) * | 2012-10-29 | 2016-12-01 | Hon Hai Prec Ind Co Ltd | Photoelectric converting module |
| CN107422433A (en) * | 2017-09-08 | 2017-12-01 | 中航海信光电技术有限公司 | PSM photoelectric transceiver integrated with multiple optical ports |
-
2009
- 2009-11-06 CN CN2009202626279U patent/CN201611400U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI560481B (en) * | 2012-10-29 | 2016-12-01 | Hon Hai Prec Ind Co Ltd | Photoelectric converting module |
| CN107422433A (en) * | 2017-09-08 | 2017-12-01 | 中航海信光电技术有限公司 | PSM photoelectric transceiver integrated with multiple optical ports |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHUHAI AFR TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ADVANCED FIBER RESOURCE (ZHUHAI) CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 519030 Guangdong city of Zhuhai Province Tang software Road No. B5 Building 2 floor Patentee after: ADVANCED FIBER RESOURCES (ZHUHAI) LTD. Address before: 519030 Guangdong city of Zhuhai Province Tang software Road No. B5 Building 2 floor Patentee before: Advanced Fiber Resources (Zhuhai) Ltd. |
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| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 519030, 1, 1-6, 8 and two, 5 production center, software Road, Guangdong, Zhuhai, China Patentee after: ADVANCED FIBER RESOURCES (ZHUHAI) LTD. Address before: 519030 Guangdong city of Zhuhai Province Tang software Road No. B5 Building 2 floor Patentee before: ADVANCED FIBER RESOURCES (ZHUHAI) LTD. |
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| CX01 | Expiry of patent term |
Granted publication date: 20101020 |
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| CX01 | Expiry of patent term |